390 lines
15 KiB
C++
390 lines
15 KiB
C++
/*
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* The MIT License (MIT)
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*
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* Copyright © 2015 Franklin "Snaipe" Mathieu <http://snai.pe/>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef CRITERION_REDIRECT_H_
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# define CRITERION_REDIRECT_H_
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# include "internal/common.h"
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# include "assert.h"
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# ifdef __cplusplus
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# include <cstdio>
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# include <memory>
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# include <fstream>
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# else
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# include <stdio.h>
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# endif
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CR_BEGIN_C_API
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CR_API void cr_redirect_stdout(void);
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CR_API void cr_redirect_stderr(void);
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CR_API void cr_redirect_stdin(void);
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CR_API CR_STDN FILE* cr_get_redirected_stdout(void);
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CR_API CR_STDN FILE* cr_get_redirected_stderr(void);
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CR_API CR_STDN FILE* cr_get_redirected_stdin(void);
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CR_API int cr_file_match_str(CR_STDN FILE* f, const char *str);
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CR_API int cr_file_match_file(CR_STDN FILE* f, CR_STDN FILE* ref);
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CR_API CR_STDN FILE *cr_mock_file_size(size_t max_size);
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CR_END_C_API
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# define cr_assert_redir_op_(Fail, Fun, Op, File, Str, ...) \
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CR_EXPAND(cr_assert_impl( \
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Fail, \
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!(Fun((File), (Str)) Op 0), \
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dummy, \
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CRITERION_ASSERT_MSG_FILE_STR_MATCH, \
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(CR_STR(File), Str), \
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__VA_ARGS__ \
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))
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# define cr_assert_redir_op_va_(Fail, Fun, Op, ...) \
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CR_EXPAND(cr_assert_redir_op_( \
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Fail, \
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Fun, \
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Op, \
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CR_VA_HEAD(__VA_ARGS__), \
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CR_VA_HEAD(CR_VA_TAIL(__VA_ARGS__)), \
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CR_VA_TAIL(CR_VA_TAIL(__VA_ARGS__)) \
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))
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# define cr_assert_redir_f_op_(Fail, Fun, Op, File, Ref, ...) \
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CR_EXPAND(cr_assert_impl( \
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Fail, \
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!(Fun((File), (Ref)) Op 0), \
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dummy, \
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CRITERION_ASSERT_MSG_FILE_MATCH, \
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(CR_STR(File), CR_STR(Ref)), \
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__VA_ARGS__ \
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))
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# define cr_assert_redir_f_op_va_(Fail, Fun, Op, ...) \
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CR_EXPAND(cr_assert_redir_op_( \
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Fail, \
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Fun, \
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Op, \
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CR_VA_HEAD(__VA_ARGS__), \
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CR_VA_HEAD(CR_VA_TAIL(__VA_ARGS__)), \
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CR_VA_TAIL(CR_VA_TAIL(__VA_ARGS__)) \
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))
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# define cr_assert_file_contents_eq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_ABORT_, cr_file_match_str, ==, __VA_ARGS__))
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# define cr_expect_file_contents_eq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_CONTINUES_, cr_file_match_str, ==, __VA_ARGS__))
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# define cr_assert_file_contents_neq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_ABORT_, cr_file_match_str, !=, __VA_ARGS__))
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# define cr_expect_file_contents_neq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_CONTINUES_, cr_file_match_str, !=, __VA_ARGS__))
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# define cr_assert_file_contents_eq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_ABORT_, cr_file_match_file, ==, __VA_ARGS__))
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# define cr_expect_file_contents_eq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_CONTINUES_, cr_file_match_file, ==, __VA_ARGS__))
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# define cr_assert_file_contents_neq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_ABORT_, cr_file_match_file, !=, __VA_ARGS__))
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# define cr_expect_file_contents_neq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_CONTINUES_, cr_file_match_file, !=, __VA_ARGS__))
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# define cr_assert_stdout_eq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_ABORT_, cr_file_match_str, ==, cr_get_redirected_stdout(), __VA_ARGS__))
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# define cr_expect_stdout_eq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_CONTINUES_, cr_file_match_str, ==, cr_get_redirected_stdout(), __VA_ARGS__))
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# define cr_assert_stdout_neq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_ABORT_, cr_file_match_str, !=, cr_get_redirected_stdout(), __VA_ARGS__))
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# define cr_expect_stdout_neq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_CONTINUES_, cr_file_match_str, !=, cr_get_redirected_stdout(), __VA_ARGS__))
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# define cr_assert_stderr_eq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_ABORT_, cr_file_match_str, ==, cr_get_redirected_stderr(), __VA_ARGS__))
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# define cr_expect_stderr_eq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_CONTINUES_, cr_file_match_str, ==, cr_get_redirected_stderr(), __VA_ARGS__))
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# define cr_assert_stderr_neq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_ABORT_, cr_file_match_str, !=, cr_get_redirected_stderr(), __VA_ARGS__))
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# define cr_expect_stderr_neq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_CONTINUES_, cr_file_match_str, !=, cr_get_redirected_stderr(), __VA_ARGS__))
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# define cr_assert_stdout_eq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_ABORT_, cr_file_match_file, ==, cr_get_redirected_stdout(), __VA_ARGS__))
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# define cr_expect_stdout_eq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_CONTINUES_, cr_file_match_file, ==, cr_get_redirected_stdout(), __VA_ARGS__))
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# define cr_assert_stdout_neq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_ABORT_, cr_file_match_file, !=, cr_get_redirected_stdout(), __VA_ARGS__))
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# define cr_expect_stdout_neq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_CONTINUES_, cr_file_match_file, !=, cr_get_redirected_stdout(), __VA_ARGS__))
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# define cr_assert_stderr_eq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_ABORT_, cr_file_match_file, ==, cr_get_redirected_stderr(), __VA_ARGS__))
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# define cr_expect_stderr_eq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_CONTINUES_, cr_file_match_file, ==, cr_get_redirected_stderr(), __VA_ARGS__))
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# define cr_assert_stderr_neq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_ABORT_, cr_file_match_file, !=, cr_get_redirected_stderr(), __VA_ARGS__))
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# define cr_expect_stderr_neq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_CONTINUES_, cr_file_match_file, !=, cr_get_redirected_stderr(), __VA_ARGS__))
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# ifdef __cplusplus
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namespace criterion {
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template <typename CharT, typename Traits = std::char_traits<CharT>>
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class stdio_sync_filebuf : public std::basic_streambuf<CharT, Traits> {
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public:
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typedef Traits traits;
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typedef std::basic_filebuf<CharT, Traits> super;
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typedef typename Traits::int_type int_type;
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typedef typename Traits::pos_type pos_type;
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typedef typename Traits::off_type off_type;
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stdio_sync_filebuf(std::FILE *file)
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: file(file)
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, lastchar(Traits::eof())
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{}
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stdio_sync_filebuf(stdio_sync_filebuf&& other) = default;
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stdio_sync_filebuf& operator=(stdio_sync_filebuf&& other) = default;
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void swap(stdio_sync_filebuf& other) {
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super::swap(other);
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std::swap(file, other.file);
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std::swap(lastchar, other.lastchar);
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}
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protected:
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int_type syncgetc();
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int_type syncungetc(int_type);
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int_type syncputc(int_type);
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virtual std::streampos seekoff(std::streamoff off,
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std::ios_base::seekdir dir,
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std::ios_base::openmode = std::ios_base::in | std::ios_base::out) {
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int whence;
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if (dir == std::ios_base::beg)
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whence = SEEK_SET;
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else if (dir == std::ios_base::cur)
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whence = SEEK_CUR;
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else
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whence = SEEK_END;
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if (!fseek(file, off, whence))
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return std::streampos(std::ftell(file));
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return std::streamoff(-1);
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}
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virtual std::streampos seekpos(std::streampos pos,
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std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) {
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return seekoff(std::streamoff(pos), std::ios_base::beg, mode);
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}
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virtual std::streamsize xsgetn(CharT* s, std::streamsize n);
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virtual std::streamsize xsputn(const CharT* s, std::streamsize n);
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virtual int sync() {
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return std::fflush(file);
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}
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virtual int_type underflow() {
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int_type c = syncgetc();
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return syncungetc(c);
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}
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virtual int_type uflow() {
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return lastchar = syncgetc();
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}
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static inline bool is_eof(int_type c) {
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static const int_type eof = Traits::eof();
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return Traits::eq_int_type(c, eof);
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}
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virtual int_type overflow(int_type c = Traits::eof()) {
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int_type ret;
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if (is_eof(c)) {
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if (std::fflush(file))
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ret = Traits::eof();
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else
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ret = Traits::not_eof(c);
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} else {
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ret = syncputc(c);
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}
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return ret;
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}
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virtual int_type pbackfail(int_type c = Traits::eof()) {
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int_type ret = syncungetc(is_eof(c) && !is_eof(lastchar) ? lastchar : c);
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lastchar = Traits::eof();
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return ret;
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}
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private:
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std::FILE *file;
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bool file_open;
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int_type lastchar;
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};
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template <>
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inline stdio_sync_filebuf<char>::int_type
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stdio_sync_filebuf<char>::syncgetc() {
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return std::getc(file);
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}
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template <>
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inline stdio_sync_filebuf<char>::int_type
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stdio_sync_filebuf<char>::syncungetc(stdio_sync_filebuf<char>::int_type c) {
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return std::ungetc(c, file);
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}
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template <>
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inline stdio_sync_filebuf<char>::int_type
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stdio_sync_filebuf<char>::syncputc(stdio_sync_filebuf<char>::int_type c) {
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return std::putc(c, file);
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}
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template <>
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inline std::streamsize
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stdio_sync_filebuf<char>::xsgetn(char *s, std::streamsize n) {
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std::streamsize res = std::fread(s, 1, n, file);
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lastchar = res > 0 ? traits::to_int_type(s[res - 1]) : traits::eof();
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return res;
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}
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template <>
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inline std::streamsize
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stdio_sync_filebuf<char>::xsputn(const char *s, std::streamsize n) {
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return std::fwrite(s, 1, n, file);
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}
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template <typename CharT, typename Super>
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class stream_mixin : public Super {
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public:
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stream_mixin(FILE* f)
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: Super()
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, fbuf(new stdio_sync_filebuf<CharT>(f))
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, file(f)
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{
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std::ios::rdbuf(&*fbuf);
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}
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stream_mixin(const stream_mixin& other) = delete;
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stream_mixin& operator=(const stream_mixin& other) = delete;
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stream_mixin(stream_mixin&& other) :
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fbuf(std::move(other.fbuf)),
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file(std::move(other.file))
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{}
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stream_mixin& operator=(stream_mixin&& other) {
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fbuf = std::move(other.fbuf);
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file = std::move(other.file);
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}
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void close(void) {
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Super::flush();
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Super::close();
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std::fclose(file);
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}
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private:
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std::shared_ptr<stdio_sync_filebuf<CharT>> fbuf;
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std::FILE* file;
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};
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template <typename CharT>
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using ofstream_mixin = stream_mixin<CharT, std::basic_ofstream<CharT>>;
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template <typename CharT>
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using ifstream_mixin = stream_mixin<CharT, std::basic_ifstream<CharT>>;
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template <typename CharT>
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using fstream_mixin = stream_mixin<CharT, std::basic_fstream<CharT>>;
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template <typename CharT>
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class basic_ofstream : public ofstream_mixin<CharT> {
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public:
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basic_ofstream(FILE* f)
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: ofstream_mixin<CharT>(f)
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{}
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basic_ofstream(basic_ofstream&& other)
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: ofstream_mixin<CharT>(std::move(other))
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{}
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};
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template <typename CharT>
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class basic_ifstream : public ifstream_mixin<CharT> {
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public:
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basic_ifstream(FILE* f)
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: ifstream_mixin<CharT>(f)
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{}
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basic_ifstream(basic_ifstream&& other)
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: ifstream_mixin<CharT>(std::move(other))
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{}
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};
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template <typename CharT>
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class basic_fstream : public fstream_mixin<CharT> {
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public:
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basic_fstream(FILE* f)
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: fstream_mixin<CharT>(f)
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{}
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basic_fstream(basic_fstream&& other)
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: fstream_mixin<CharT>(std::move(other))
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{}
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};
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using ofstream = basic_ofstream<char>;
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using ifstream = basic_ifstream<char>;
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using fstream = basic_fstream<char>;
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struct get_redirected_out_stream_ {
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static inline ofstream& call(std::FILE* f) {
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static std::unique_ptr<ofstream> stream;
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if (!stream)
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stream.reset(new ofstream(f));
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return *stream;
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}
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};
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struct get_redirected_in_stream_ {
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static inline ifstream& call(std::FILE* f) {
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static std::unique_ptr<ifstream> stream;
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if (!stream)
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stream.reset(new ifstream(f));
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return *stream;
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}
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};
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static inline ofstream& get_redirected_cin(void) {
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return get_redirected_out_stream_::call(cr_get_redirected_stdin());
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}
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static inline ifstream& get_redirected_cout(void) {
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return get_redirected_in_stream_::call(cr_get_redirected_stdout());
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}
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static inline ifstream& get_redirected_cerr(void) {
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return get_redirected_in_stream_::call(cr_get_redirected_stderr());
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}
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# if __GNUC__ >= 5
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static inline fstream mock_file(size_t max_size) {
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return fstream(cr_mock_file_size(max_size));
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}
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static inline fstream mock_file(void) {
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return mock_file(4096);
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}
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# endif
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}
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# endif
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#endif /* !CRITERION_REDIRECT_H_ */
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